Home / 13,278.28-18,339.19-9,022.23

Finding the Fourth Proportional to 13,278.28, 18,339.19 and 9,022.23

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Solution

The fourth proportional to 13,278.28, 18,339.19 and 9,022.23 is: 12,460.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,278.28 : 18,339.19 = 9,022.23 : x
  2. Step 2: Convert to fraction form
    13,278.28/18,339.19 = 9,022.23/x
  3. Step 3: Cross multiply
    13,278.28x = 18,339.19 × 9,022.23
  4. Step 4: Simplify right side
    13,278.28x = 165,460,386.46
  5. Step 5: Solve for x
    x = 165,460,386.46/13,278.28
  6. Step 6: Final answer
    x = 12,460.98

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Half scale
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Double scale
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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.